... and other siblings of children with leukemia have two to four times the average risk of developing it, too. Children who have inherited certain genetic problems (such as Li-Fraumenisyndrome, Down syndrome , Klinefelter syndrome, neurofibromatosis , ataxia telangiectasia, or ...

... increased risks of breast and/or ovarian cancers ( 2 , 12 ). These other genes include several that are associated with inherited disorders, such as Lynch syndrome and Li-Fraumenisyndrome , that increase the risk of many cancer ...